/*
 * Copyright 2009-2020 Tilmann Zaeschke
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.zoodb.internal.server;

import java.nio.ByteBuffer;


/**
 * A StorageChannel manages a database file and provides read- and 
 * write-views on it. 
 * 
 * @author Tilmann Zaeschke
 *
 */
public interface StorageChannel {

	int getPageSize();

	void close();

	void write(ByteBuffer buf, long currentPage);

	void readPage(ByteBuffer buf, long pageId);

	long getTxId();

	int getNextPage(int prevPage);

}
